Roller side bearing.



C. L. MElSTER.

' ROLLER SIDE BEARING. APPLICATKON (FILED JAN. 11, 1913.

1,200,005. Pdtented Oct. 3, 1916.1

, AWE/V7012: Q04

WITNESSES 'NiTEj S j CONRAD L. MEISYTEIR, or wltmme'romnomru CAROLINA.

ROLLER SIDE BEARING.

To all whom it may concern: Be it known that I, CONRAD L. Mnis'rnn, a citizen of the United States, residing in' Wilmington, in the county of New Hanover and State of North Carolina, have invented certain new and useful Improvements in Roller Side Bearings, ing is a specification.

My inventioi'rrelates to improvements inroller side bearings for railway cars. V In roller side bearings for railway cars, difficulty has heretofore been experienced in causing the roller to return automatically to its .central or normal position, except by the use of springs or intricateand numerous parts.

The object of my invention is to produce a roller sidebea-ring, simple in construction, consisting of the least number of parts and so arranged that the roller will return to its central or normal position, by the action of gravity.

My invention consists inthe novel con'- structions and combination of parts as herein shown, described, and claimed.

In the drawings Figure l'is a plan view of the bottom plate'and roller. Fig. 2 is a partial longitudinal View of the side elevation of thedevice and a partial longitudinal verti-' cal section along lines 22 shown in Fig. 1. Fig. 3 IS a partial end view of the device and a. partial verticalsection along lines 3-3 shown in Fig. 1 Fig. 4c shows a side elevation of the device in a modified 'form, one of the side walls of-the bottom plate being partially removed so as to indicate that the arrangement ofthe'channels in the side walls are opposite insteadof' coincident with each other, due to the'use of one lugon each side of the roller, the lugs not b ing Fig. 6 i

nation illustrated in Fig, 4, showing more clearly the lugs on each side. "lhe reason for-locating the lugs in this manner will be more fully xplained later. Fig. 6 is another inodil'ic-ation'of the device showing a side elevation of the combination when more than one lug is used on each side of the ller and where the opposite ends of the .ugs are different. Fig. 7 shows moreclearly the arrangement of the ends'of the lugs K Specification ofLetters Patent. Application filed January 17, 1913. Serial No.i'42,'e2s.

trated in; Fig. 6. modification of ends ofthe lugs. The reav of which the follow- Patented 0.131;. a, mic.

' where they project beyond the sides of the roller and the corresponding cross sections of the channels in the side walls, as illus- Fig. 8 shows another son for arranging'th'e channels in the side walls as shown in Fig. 6 and making the ends of the lugs, which are opposite each other, of different size, as shown also in Fig.6, this detail being more fully illus trated in Fig. 7; or making the ends of the lugs which are opposite each other of different shape, as illustrated in Fig. 8, will also be more fully explained later.

Referring now to Fig. 1 and its corresponding Fig. 2 and Fig. 3 is a roller, 2 is a bottom plate with sidewalls 3 to guide the roller 1, and with projecting ears 4 arrangechfor securing the bottom plate to a part of the car truck. The. roller 1 is provided with a lug 5 projecting'beyond its side "and located near. its rolling surface.

Fig. 1 and Fig. 3 show this lug-5 projecting fromeach side of roller 1 but the arrangement would be just as practical if thelug 5 projectedfrom only one side of the roller instead of both as shown. The side walls 3 of the bottom plate have channels or grooves object of the channels 6 is that their, walls prevent the translation ofthe roller when provided with its projecting lugs 5 between the side walls 3, but permit the roller to roll freely toward either end of the'hottom plate 2; therefore, I term the walls of these chain.- nels the guiding'means for the lugs on the roller. The channels 6. in the side walls 3' are provided with an extension7, at the, end

of which is an opening 8 for the purpose of entering the "roller 1 with its side iugs be tween the walls 3 of the bottom plate 2.

This extension 7 and opening 8 can be located at any-suitable place in the side walls :5, the drawings showing them located centrally merely because it is deemed the most suitable arrangement. Holes 9, located at some place in the extensions 7 are also shown through which the lugsfi can be inserted between the side walls 3 when the lugs 5 are not fixed parts of the roller, but are in the yiorm of loose pins passing through the roller. This arrangement of the lugs will be more fully explained in a modified form of the combination later.

on which it is to be used in any suitablemanner and when contact ismade' between the top or body side bearing (not here shown) and the roller, and; the truck to which the bearing is secured, is deflected,

the roller rolls along theftop surface of the bottom. plate and in so doing the lugs attached thereto move in the channels of the side walls, following a. curved path known as a trochoid. When the topor body side bearing is not in contact with the roller and the roller is away from'its central or normal position, the roller is caused to roll back again to its central or normal position by the action of gravity on thelugsand also by the walls of the channels guidingthe lugs of the roller so as to cause the roller to roll in a predetermined manner.

Fig. 4 and Fig.. 5'sho'w amodified arrangement of, the combination in that the 'nels 6 in the side walls 3, are shaped in a trochoidal form different to that shown. in

Fig. 2 and at the same time they are formed in each side wall oppositely from each other,

this being necessary so that those in each side wall can properly actas the guiding means for the lug 5 projecting between them. i

In Fig. 2 it'is evident that the walls of the channel 6 prevents the lateral-translation of the bottom plate 2, al-

centrally, the 'roller'l is not prevented from being moved vertically ofi' the bottom plate, which might be considered objectionable; This objection, however, is overcome by the arrangement of the lugs 5, as shown in Fig.

' 4 and Fig. 5, and the roller 1 whilebeing free to roll toward either end of the bottom I plate 2 is at the same time prevented from being translated along the bottom plate or raised vertically off the same. A still further modification of the combination to accomplish the results described above is shown in Fig.I 6 and Fig. 7, or Fig. 8. In this arrangement the lugs are not fixed parts of the roller but are in the form of loose pins ll) passing through suitably provided holes in the roller and instead of lug on each side of the roller more than one is used, thus providing a stronger means of holding the roller 1 between the side 1 will be walls 3. When loose pin lugs are used, the opening 8 at the end of the extension 7 may 'be used if desired, but an improved means nels the pins are held-in place between the side walls as securely as if they were a fixed part of the-roller instead of being loose in the same.

' If the lugs on' the ends of the pins were all the same size or same shape and if the walls ofjthe channels 6, or guiding means for these lugs, were also of the same shape and size to suitably receive the lugs and if at the same time they:were located symmet' rically .opposite each other, the roller 1 might berenderedinoperative owing to thepossi'bility of both lugs on each side being placed in the same symmetrically posted pair of channels when the 'roller is off the central or normal position. To overcome this possibility the opposite ends of the lugs are made of. diiier'ent size orof diiferent shape as illustrated in F ig. 7' and Fig. '8, and when the pins are inserted through the holes 9 of the side walls, and through the holes 11 of the roller, they should be Insert- 'ed from opposite sides so that the roller will have its projectin lugs on each side of different size or di erent shape to each other.

The guiding means for these lugs when so.

inserted being suitably arranged in each of the side walls, the roller, while being prevented from translation along the bottom plate or-from being lifted off the same, and while being prevented from becoming inoperative due to the'impossibility of the lugs on each side being located both in the same guide channel, on account oftheir diflerence in size orshape, as explained above, is 'free to roll toward each end of the bottom platein precisely the same manner as in the other forms of the combination.

It is evident from the foregoing description and illustrationsof my invention that the roller is perfectly free to rollon either side of its central ornormal position toward the endsof the bearing'plate and when the contact of the top or 'bodyside bearing is removed the roller will return to itscentral or. normal'position, provided the force of gravity acting through thecombined' center of gravity of the roller and its lugs pass. through some point on th bottom late which is between the 'contactline o the roller and the central or normal position of the roller. v

It is also evident that when the travel of the roller on each side of its central or nor mal position is so limited as to comply with the restrictions in the above paragraph that it is impossible to cause the roller to rotate about its lugs, notwithstanding the number of lugs used or their location on the sides of the roller. Y

The roller 1 can be provided with a series of holes 11 for the insertion of the pins 10 at one or more locations, so that in case the roller 1 becomes worn or flattened at any part of-its rolling surface, the pins 10 can be applied in new locations and new contact surfaces provided.

The lugs 5 can be located at different distances from the bottom rolling surface of the roller 1 on the same or opposite sides of the roller 1 and the channels 6 properly located in the side wallsto'correspond.

Realizing that cons derable variation is possible in the details of this construction without departing from the spirit of the invention, I therefore do not intend to limit myself to the specific forms shown herein and described.

I claim as my invention:

1. In anantifriction bearing the combination of a. bearing plate having side Walls,

said side walls having trochoidal shaped recesses therein and a roller having eccentrically located lugs consisting of members extending laterally therefrom and engaging the said trochoidal shaped recesses in said walls.

EL-In an antifriction' bearing the combination of a bearingplate having side walls, said side Walls having trochoidal shaped recesses therein and a roller'having eccentricall v llocated lugs engaging'said trochoidal shaped recesses.

315'111 an antifriction bearing the 'combi-- nation of a bearing plate having side walls,

said side walls having trochoidal shaped recesses therein and a roller having eccentrically located lugs extending laterally therefrom, and from the opposite sides thereof, engaging said trochoidal. shaped recesses.

.4. In anantifriction bearing the combi-. nation of a bearing plate having side walls,

said side walls having trochoidal shaped recesses therein and a roller having eccentrically located lugs consisting of members extendingdaterally therefrom, the opposite en(lsol wliicl1 are differently formed and engaging said trochoidal shaped recesses.

5. In an antifriction bearing, the combination of a bearing plate having side walls, said side wallshaving trochoidal shaped recesses therein, and a roller having lugs con- ..sisting of members extending laterally therefromand from opposite sides thereof,

eccentrically located with respect to each other and engaging said trochoidal shaped recesses. I

6. In an antifriction bearing the combination of a bearing plate having side walls,

;said side walls having trochoidal shaped recesses therein and a roller having a series of eccentrieally located apertures therein and having members extending within said apertures and engaging said trochoidal shaped recesses.

7. In an anti-friction bearingthe combination of a bearing plate having side walls, and a roller having eccentrically "located lugs projecting into recesses into said side walls, the lugs being solocated on the roller and the recesses in the side walls being so shaped as to prevent the sliding of the roller along the bottom plate and assist the return of the roller to its central or normalposition.

' 8. In an anti-friction bearing the combination of a bearing plate having side walls, and a roller having ec'centrically located .lugs consisting of loose pins projecting into recesses in said side walls, the loose pin lugs being so located on the roller and the recesses I inthe side walls being so shaped as to prevent the sliding of the'roller along the bottom plate and assist. the return of the roller I i to its central or normal position. r

In an anti-friction bearing the combination of a bearing plate having side walls, and a roller having lugs on opposite sides. of the same eccentrically located with respect to each other,said.lugs projecting into recesses in said side walls, the lugs beingso located on thesroller and the recesses being so shaped in the sidewalls as to prevent the roller from sliding along the bottom plate,'and assist the return of the roller'to its central or normal position.

10.- In an anti friction bearing the combination of a bearing platehaving side walls, I and a roller having -eccentrically side walls, said lugs generating trochoidal curves when the roller rolls along the bottom plate, the lugs being so located on the roller and the recesses in the side walls be -1ng so adapted as to prevent the roller sliding a ong the bottom plate and assist in returning the roller to its central or normal position.

12. In an anti-friction bearing the combination of a bearing plate having side walls, and a roller having cccentrically located lugs consisting of loose pins projecting into recesses .in said side walls, said lugs generating trochoidal'curves when ing 'trochoidal curves when the roller rolls along the bottom plate, the lugs being so located on the roller and the recesses in the side walls being so adapted as to prevent the roller sliding along the bottom plate and assist in returning the rollerto its central or normal position.

14. In an anti-friction bearing the combination of a bearing plate having sidewalls, and a roller having eccentrically located lugs consisting of loose pins, the ends of which are of different shape, projecting into rece'sses in said side walls, said lugs generating trochoidal curves when the roller rolls along the bottom plate, the lugs being so located on the roller and the recesses in the side wall being so adapted as to prevent the rollersliding along the bottom plate and assist in returning the roller to its central or normal position.

' 15. In an anti-friction bearing the combination of a bearing plate having side walls, and a roller having a series of eccentr'ically located apertures therein, lugs consisting of loose pins projecting into said apertures and into recesses in said side walls, the apertures being so located in the roller and the recesses in'the side walls being so shaped that the lugs projecting into the apertures and the side wall recesses prevent the sliding of the roller along the bottom plate and assist the return of the roller to its central or normal position.

16. In an antidriction bearing the combination of a bearing plate having side walls, and a roller having a series of eccentrically located apertures therein, lugs consisting loose pins projecting into said apertures-and into recesses in said side walls, said lugs generating trochoidal curves when the roller rolls along the bottom plate, the apertures being so located in the roller and the recesses in the side walls being so shaped that the lugs projecting into the apertures and the side wall recesses prevent the sliding of the roller along the bottom plate and assist the return of the roller to its central or normal position.

17. In a side bearing, the combination witha bearing plate provided with a wall thereon, having a guidewav thertin, of a l I roller adapted to roll on said bearing plate and means for guiding said roller, compris- 18. In a side bearing, the combination with a bearing plate provided with side walls having channels therein, of a roller adapted to roll on said bearing plate and means for guiding said roller,- comprising eccentrically located trunnions on the roller operating within the channels in said side walls, the walls of said channels being sub-- stantially parallel to the path of said trunnions and cotiperating there-with to maintain an unchanged rolling surface on said roller for contact with said bearing plate.

19. In a side bearing, the combination with a bearing plate. provided with side walls having channels therein, oi a roller adapted to roll on said bearing plate and means for guiding said roller, comprising eccentrically located trunn'ions on the roller operating within the channels in said side walls, said trunnions operating in trochoidal curves within the channels during the roli ing movement of the roller, the walls of said channels being substantially parallel to the path of said trumlions and coiiperating therewith to maintain an unchanged rollin sur ace on said. roller for contact with sai bearing plate.

20. In a side bearing, the combination with a bearing plate provided with side while having channels t ierein, of aroller adapted to roll on said bearing plate and means for guiding said roller, com risin eccentrically located trunnions on t e ro er operating within channels in said side walls, said trunnions being formed by a pin extending from the side of said roller, the walls of said channels being substantially parallel to the path of said trunnions'and coiiperating therewith to maintain an unchanged rolling surface on said roller for contact with said bearing plate.

21. In an anti-friction bearing the com bination of a bearing plate having side walls, said side walls having trochoidal shaped recesses thcreinand a roller having eccentrically located lugs engaging said trochoidal shaped recesses. U

22. In an anti-friction bearing the combi nation of a bearing plate having side ails,

said side walls having trochoidal shaped recesses therein anda roller having eceentrh callv located lugs consist ng of members extending laterally therefrom and engaging the said iochoidal shaped recesses in said walls.

23. In all anti-friction bearing the combination of a bearing plate having side 'alls, said side walls having trochoidal shaped recesses therein and a roller having eccenpresence of two Witnesses, this 15 day of trically located lugs extending laterally January, 1913.

therefrom, and from the opposite sides thereof, engaging said trochoidal shaped 5 recesses. Witnessesr In testimony that I claim the foregoing I WALTER D. THOMAS, as mv invention 1' aflix my signature, in W. J LAwTfiER.

C. L. MEISTER. 

